Defect with removal of aliases from custom domain with iCloud
Hi,
I added a custom domain myfamily.com for Family Sharing usage.
From account John I added an email *** @myfamily.com, and realised that Helen should add it herself. I removed the alias from my settings and asked Helen to add it herself from her iCloud.com/settings page. But she failed with error telling that it can't be done, try later. It appears that if email address was added and removed from one family member, it can't be added by another. More than that this alias is not shown in web interface, but appears and can't be removed by any means from Mail app on MacOS and iOS, so you have to cope with the email alias in these apps.
Even removing the domain doesn't help and you can still send an email from Mail app if you stop using this domain as an owner. So if one of the accounts of family members is compromised and you restrict its access to iCloud+ or remove the domain, the account still can be used for sending email from this domain.
[Edited by Moderator]